Adds a note on Mattermost smtp configuration keys
As noted in #1287 (closed) the Mattermost and GitLab configuration keys differ
This commit adds a note to this effect in the Mattermost README.
Fixes #1287 (closed)
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
As noted in #1287 (closed) the Mattermost and GitLab configuration keys differ
This commit adds a note to this effect in the Mattermost README.
Fixes #1287 (closed)